 7.Questions 1: All matter contains both positively and negatively charged particl...
 7.Problems 1: Two charged particles exert an electric force of 16 N on each other...
 7.Challenges 1: Compute the electric force acting between the electron and the pro...
 7.Questions 2: A particular solid is electrically charged after it is rubbed, but ...
 7.Problems 2: What would the separation between two identical objects, one carry...
 7.Challenges 2: Use the result from Challenge 1 and the equation for centripetalfor...
 7.Questions 3: What is a positive ion? A negative ion?
 7.Problems 3: A particle having a positive charge of 2.0 106 C experiences anupwa...
 7.Challenges 3: Compute the number of electrons that flow through a wire eachsecond...
 7.Questions 4: What remains after a hydrogen atom is positively ionized?
 7.Problems 4: During 30 seconds of use, 250 C of charge flow through amicrowave o...
 7.Challenges 4: Using your understanding of the nature of internal energy andtemper...
 7.Questions 5: Describe the similarities and the differences between the gravitat...
 7.Problems 5: A lightning stroke lasts 0.05 s and involves a flow of 100 C. What ...
 7.Challenges 5: The current that flows through an incandescent lightbulb immediate...
 7.Questions 6: When clothes are removed from a hot dryer, they often clingtogether...
 7.Problems 6: . A current of 0.7 A goes through an electric motor for 1 min. Howm...
 7.Challenges 6: An electrical device called a diode is designed to have very low re...
 7.Questions 7: In otherwise empty space, what would happen if the size of the elec...
 7.Problems 7: A calculator draws a current of 0.0001 A for 5 min. How muchcharge ...
 7.Challenges 7: Imagine a company offering a line of hair dryers that operate on di...
 7.Questions 8: (a) A negatively charged iron ball (on the end of a plastic rod)exe...
 7.Problems 8: A current of 12 A flows through an electric heater operating on120 ...
 7.Challenges 8: Perform the calculation referred to in the last sentence ofExample ...
 7.Questions 9: What is an electric field? Sketch the shape of the electric fieldar...
 7.Problems 9: A 120V circuit in a house is equipped with a 20A fuse that willbl...
 7.Challenges 9: Combine Ohms law and the equation for power consumption toderive th...
 7.Questions 10: At one moment during a storm, the electric field between twoclouds ...
 7.Problems 10: The resistance of each brake lightbulb on an automobile is 6.6 .Use...
 7.Challenges 10: A defibrillator sends approximately 0.1 C of charge through apatien...
 7.Questions 11: Explain what an electrostatic precipitator is and how it works.
 7.Problems 11: The lightbulb used in a computer projector has a resistance of 80 ....
 7.Questions 12: If electrons are flowing clockwise around an electric circuit, whic...
 7.Problems 12: The resistance of the skin on a persons finger is typically about20...
 7.Questions 13: Saltwater contains an equal number of positive and negative ions.Wh...
 7.Problems 13: A 150 resistor is connected to a variablevoltage power supply.(a)...
 7.Questions 14: Materials can be classified into four categories based on the easew...
 7.Problems 14: Compute the power consumption of the electric heater in 8.
 7.Questions 15: A solid metal cylinder has a certain resistance. It is then heated ...
 7.Problems 15: An electric eel can generate a 400V, 0.5A shock for stunning itsp...
 7.Questions 16: A student using a sensitive meter that measures resistance finds th...
 7.Problems 16: An electric train operates on 750 V. What is its power consumptionw...
 7.Questions 17: If a new material is found that is a superconductor at all tempera...
 7.Problems 17: All of the electrical outlets in a room are connected in a single p...
 7.Questions 18: Explain what current, resistance, and voltage are.
 7.Problems 18: 18. Your cell phone typically consumes about 400 mW of power whenyo...
 7.Questions 19: Make a sketch of a simple electric circuit and label the key eleme...
 7.Problems 19: A cars headlight consumes 40 W when on low beam and 50 Wwhen on hig...
 7.Questions 20: Describe Ohms law.
 7.Problems 20: Find the current that flows in a 40W bulb used in a house(V 120 V)...
 7.Questions 21: A power supply is connected to two bare wires that are inserted int...
 7.Problems 21: An electric clothes dryer is rated at 4,000 W. How much energy does...
 7.Questions 22: There are two basic methods for connecting more than one electrica...
 7.Problems 22: A clock consumes 2 W of electrical power. How much energy does itus...
 7.Questions 23: Make a sketch of an electric circuit that contains a switch and two...
 7.Problems 23: Which costs more, running a 1,200W hair dryer for 5 min or leavin...
 7.Questions 24: Two 1.5volt batteries are connected in series in an electric circu...
 7.Problems 24: A representative lightning strike is caused by a voltage of200,000,...
 7.Questions 25: An electrical supply company sells two models of 100watt powersupp...
 7.Problems 25: A toaster operating on 120 V uses a current of 9 A.(a) What is the ...
 7.Questions 26: A simple electric circuit consists of a constantvoltage power supp...
 7.Problems 26: A certain electric motor draws a current of 10 A when connectedto 1...
 7.Questions 27: What is the purpose of having fuses or circuit breakers in electric...
 7.Problems 27: The generator at a large power plant has an output of 1,000,000 kWa...
 7.Questions 28: A 20A fuse in a household electric circuit burns out. What catastr...
 7.Problems 28: The generator at a large power plant has an output of 1,000,000 kWa...
 7.Questions 29: Why is it economical to use extremely high voltages for the transm...
 7.Problems 29: 29. About 40,000 J of energy is stored in a typical 1.5V Dcell ba...
 7.Questions 30: Explain what AC and DC are. Why is AC used by electric utilities?Wh...
 7.Problems 30: An electric car is being designed to have an average power output o...
 7.Questions 31: If AC in a circuit can be thought of as a wave, which kind is it, l...
 7.Questions 32: If the electric utility company where you live suddenly changed the...
Solutions for Chapter 7: Electricity
Full solutions for Inquiry into Physics  7th Edition
ISBN: 9781133104681
Solutions for Chapter 7: Electricity
Get Full SolutionsInquiry into Physics was written by and is associated to the ISBN: 9781133104681. This textbook survival guide was created for the textbook: Inquiry into Physics, edition: 7. This expansive textbook survival guide covers the following chapters and their solutions. Since 72 problems in chapter 7: Electricity have been answered, more than 7195 students have viewed full stepbystep solutions from this chapter. Chapter 7: Electricity includes 72 full stepbystep solutions.

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parallel

any symbol
average (indicated by a bar over a symbol—e.g., v¯ is average velocity)

°C
Celsius degree

°F
Fahrenheit degree